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不干膠防偽標簽印刷,不干膠標簽模切應該注意哪些知識?

來源:http://tjanamera.com/ 日期:2021-01-12 發布人:shengfeng 不干膠印刷材料的模切質量同多種因素有關,如模切方式、模切裝置精度、模切版的精度、模切刀片同材料的匹配情況,此外,模切質量還與不干膠印刷材料的特性有關,如面紙、黏合劑和底紙性能不同,各種不干膠印刷材料的模切特性也不一樣。
The die-cutting quality of the self-adhesive printing materials is related to many factors, such as the die-cutting mode, the precision of the die-cutting device, the precision of the die-cutting plate, and the matching of the die-cutting blade with the material. In addition, the die-cutting quality is also related to the characteristics of the self-adhesive printing materials, such as different properties of the face paper, adhesive and backing paper, and the die-cutting characteristics of various self-adhesive printing materials are also different.
面材對模切的影響
Influence of surface material on die cutting
影響模切質量的因素有面材的種類、強度和厚度。
The factors that affect the quality of die cutting are the type, strength and thickness of the surface material.
1.面材的種類
1. Types of surface materials
面材基本上可分為紙張和薄膜兩大類.普通紙張類的切斷原理同薄膜材料略有不同。雖然從理論上講,模切時必須將面材和黏合劑一同切穿,但實際上模切紙張類材料是刀具切削和紙張受力斷裂的綜合結果,即刀刃向下切削的同時也將紙張向兩側擠壓,所以,相對而言,紙張類材料的模切精度不是很高。在分析樣品時經常會看到一些標簽有毛邊,這就是由于材料纖維較粗,自然斷裂形成的現象。基于紙張類材料的模切特性,并考慮到刀刃的磨損,平壓平模切刀片的角度通常規定為52°,如果角度大,對材料的擠壓變形就大,即水平方向的分離力就會使材料斷裂分離現象加劇。
The surface material can be divided into paper and film. The cutting principle of ordinary paper is slightly different from that of film. Although theoretically speaking, the surface material and adhesive must be cut through together during die-cutting, in fact, die-cutting paper sheet material is the comprehensive result of cutting tool and paper stress fracture, that is, when the cutting edge cuts downward, the paper will also be squeezed to both sides. Therefore, relatively speaking, the die-cutting accuracy of paper material is not very high. In the analysis of samples, it is often seen that some labels have rough edges, which is due to the phenomenon that the material fiber is thicker and naturally breaks. Based on the die-cutting characteristics of paper materials, and considering the wear of the blade, the angle of the flat die-cutting blade is usually set at 52 degrees. If the angle is large, the extrusion deformation of the material will be large, that is, the horizontal separation force will aggravate the fracture and separation of the material.
山東透明不干膠標簽印刷
薄膜類材料的模切,簡單地說就是完全切穿的過程。因為薄膜類材料大多具有韌性,不會自然斷裂,所以切穿三分之二是不適合的,必須完全切穿或者切穿五分之四的厚度,否則排廢時會連同標簽一同剝離。因此,模切薄膜材料的刀刃要鋒利,硬度要高,要采用小角度模切刀,刀刃角度通常為30°~42°。如果使用大角度的模切刀,不僅模切困難,而且如果刀刃不鋒利還會出現面材切不穿,底紙斷裂的情況,或者使成品標簽的邊緣出現翻邊現象,造成滲膠。總之,模切薄膜的精度要高于紙張類材料,所以模切薄膜材料對設備精度、模切版的精度和底紙都有一定的要求。
Film materials die cutting, simply speaking, is a complete cut through process. Because most of the film materials have toughness and will not naturally fracture, it is not suitable to cut through two-thirds of the thickness. It must be completely cut through or cut through four fifths of the thickness, otherwise it will be stripped together with the label when it is discharged. Therefore, die-cutting film material blade to be sharp, high hardness, to use a small angle die-cutting tool, blade angle is usually 30 ° to 42 °. If the use of a large angle die-cutting knife, not only die-cutting difficulties, but also if the blade is not sharp, there will be surface material cut through, the bottom paper fracture, or make the edge of the finished label flanging phenomenon, resulting in leakage. In short, the precision of die-cutting film is higher than that of paper materials, so die-cutting film materials have certain requirements for equipment precision, die-cutting plate precision and bottom paper.
2.面材的強度
2. Strength of surface material
面材的強度同面材的厚度、纖維(高分子)結構和自身的濕度有關。在不干膠印刷材料的模切過程中,與面材關聯大的因素是排廢速度。環境濕度越大,材料受潮后自身的強度就越弱,從而容易拉斷,甚至無法排廢。
The strength of the surface material is related to the thickness of the surface material, fiber (polymer) structure and its own humidity. In the die-cutting process of self-adhesive printing materials, the major factor associated with the surface material is the waste discharge speed. The higher the humidity is, the weaker the strength of the material will be, so it is easy to break and even unable to discharge.
設計版式時,要根據材料的強度,通過試驗合理安排標簽的排廢尺寸和排廢速度,這樣不僅可以提高生產效率,還能減少材料浪費。
When designing the layout, it is necessary to arrange the waste size and speed of the label reasonably according to the strength of the material, which can not only improve the production efficiency, but also reduce the material waste.
3.面材的厚度
3. Thickness of surface material
材料的厚度直接影響模切的深度,材料越厚,越容易模切。因為材料越厚,模切的公差越大,切穿底紙的幾率就越小。相對而言,材料薄,容易出現切穿底紙的故障。如在同一臺平壓平標簽模切機上分別模切80g/m2和60g/m2,底紙相同的面材。結果發現:80g/m2的材料模切排廢正常,而換上60g/m2的材料,模切時經常出現排廢斷裂、底紙切穿和掉標現象,需要經常停機,進行墊版,浪費很大。出現這類情況有多種原因,如果使用圓壓圓模切方式或減小模切面積,使用精度高的設備等,這種現象可減少或避免。所以模切薄型面材時,一定要在精度高的設備上進行,盡量減少模切面積(尤其是小標簽),使用模切版生產商的模切版,另外還要注意墊版精度。
The thickness of the material directly affects the depth of die-cutting, the thicker the material, the easier the die-cutting. Because the thicker the material, the larger the die cutting tolerance, the smaller the probability of cutting through the bottom paper. Relatively speaking, thin material, easy to cut through the bottom of the paper failure. For example, in the same flat label die-cutting machine, die-cutting 80g / m2 and 60g / m2 respectively, with the same base paper. The results showed that: 80g / m2 material die-cutting waste normal, and replaced with 60g / m2 material, die-cutting often appear waste fracture, bottom paper cut through and off mark phenomenon, need to often stop, pad, waste a lot. There are many reasons for this kind of situation, if the use of rotary die-cutting or reduce the die-cutting area, the use of high-precision equipment, this phenomenon can be reduced or avoided. So die cutting thin surface material, must be carried out in high precision equipment, try to reduce the die cutting area (especially small label), use the professional die-cutting plate manufacturer's die-cutting plate, in addition to pay attention to the accuracy of pad.
面材的厚度同強度成正比,直接影響排廢速度。可分別用80g/m2和60g/m2的材料做排廢對比試驗;結果是前者比后者的生產效率提高了20%~30%。
The thickness of the surface material is directly proportional to the strength, which directly affects the waste discharge speed. The results show that the production efficiency of 80g / m2 and 60g / m2 is 20% - 30% higher than that of the latter.
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